## sql改造:sql–巢狀子查詢
(select 別名1.列名1,別名1.列名2, rownum as rn from
(原始sql-- select列名1,列名2, from 表名 where 1 = 1 order by update desc)
)別名1 where rownum <= 『5』;
(selec a.id,a.name, rownum as rn from
(原始sql-- select列名1,列名2, from 表名 where 1 = 1 order by update desc)
)a where rownum <= 『5』;
(select 別名2.列名1,別名2.列名2, rownum as rn from
(select 別名1.列名1,別名1.列名2, rownum as rn from
(原始sql-- select列名1,列名2, from 表名 where 1 = 1 order by update desc)
)別名1 where rownum <= 『5』;
) 別名2 where rn >= 『0』;
(select 別名2.列名1,別名2.列名2, rownum as rn from
(select 別名1.列名1,別名1.列名2, rownum as rn from
(原始sql-- select列名1,列名2, from 表名 where 1 = 1 order by update desc)
)別名1 where rownum <= 『5』;
) 別名2 where rn >= 『0』;
oracle資料庫例項:
恭喜!芝麻開花節節高。
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